Comparison of the atomic level structure of the plastic crystalline and the liquid phases of CBr2Cl2: neutron diffraction and Reverse Monte Carlo modeling

Abstract

Neutron diffraction results obtained for plastic crystalline dichlorodibromomethane (CBr2Cl2) have been modelled by means of the Reverse Monte Carlo method. Comparison with its liquid phase is provided at several levels of the atomic structure (total scattering structure factors, partial radial distribution functions, orientational and dipole-dipole correlations). Results reveal that the relative orientation of neighbouring molecules largely depends on the steric effect. The small dipole moment has not as strong influence as the steric effect on the short range order. Our observations fit well with earlier findings presented for the series CBrnCl4-n (n=0, 1, 2, 4).

14 pages, 6 figures, accepted for publication in Journal of Physics: Condensed Matter

References in corpus (2)

• Local order and orientational correlations in liquid and crystalline phases of carbon tetrabromide from neutron powder diffraction measurements
• The Plastic and Liquid Phases of CCl${}_3$Br Studied by Molecular Dynamics Simulations

Cited by in corpus (3)

• Atomic level structure of Ge-Sb-S glasses: chemical short range order and long Sb-S bonds
• Reverse Monte Carlo investigations concerning recent isotopic substitution neutron diffraction data on liquid water
• Structure determination of liquid carbon tetrabromide via a combination of x-ray and neutron diffraction data and reverse Monte Carlo modeling